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Make i915_gem_set_wedged() and i915_gem_unset_wedged() behaviour more consistent if called concurrently, and only do the wedging and reporting once, curtailing any possible race where we start unwedging in the middle of a wedge. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190114210408.4561-2-chris@chris-wilson.co.uk